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  • play two sounds simultaneously iphone sdk

    - by Asaf Greene
    I am trying to make a small music app on the iphone. I want to have an octave a piano which will respond to touches and play the key or keys that the user touches. How would i be able to get two or more sounds to play at the same time so it sounds like a chord? I tried using AVFoundation but the two sounds just play one after the other.

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  • Can't concatenate 2 arrays in PHP

    - by alex
    I've recently learned how to join 2 arrays using the + operator in PHP. But consider this code... $array = array('Item 1'); $array += array('Item 2'); var_dump($array); Output is array(1) { [0]= string(6) "Item 1" } Why does this not work? Skipping the shorthand and using $array = $array + array('Item 2') does not work either. Does it have something to do with the keys?

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  • Favorite Visual Studio keyboard remappings?

    - by hoytster
    Stack Overflow has covered favorite short-cuts and add-ins, optimizations and preferences -- great topics all. If this one has been covered, I can't find it -- so thanks in advance for the link. What are your favorite Visual Studio keyboard remappings? Mine are motivated by the fact that I'm a touch-typist. Mouse, function keys, arrow keys, Home, End -- bleh. These are commands I do all day every day, so I've remapped them to sequences I can execute without moving my hands from the home row. The command that is remapped in Tools = Customize = [Keyboard] is shown in parentheses. I'm 100% positive that there are better remappings than these, so please post yours! Please include the command; oft times, figuring it out is a challenge. -- Hoytster Running the app and operating the debugger Ctrl+Q + Ctrl+R Run the application, in debug mode (Debug.Start) Ctrl+Q + Ctrl+Q Quit (stop) the application (Debug.StopDebugging) Ctrl+T Toggle a breakpoint at the current line (Debug.ToggleBreakpoint) Ctrl+K + Ctrl+I Step Into the method (Debug.StepInto) Ctrl+K + Ctrl+O Step Out of the method (Debug.StepOut) Ctrl+N Step over the method to the Next statement (Debug.StepOver) Ctrl+K + Ctrl+C Run the code, stopping at the Cursor position (Debug.RunToCursor) Ctrl+K + Ctrl+E Set then next statement to Execute (Debug.SetNextStatement) Navigating the code Ctrl+S Move a character LEFT (Edit.CharLeft) Ctrl+D Move a character RIGHT (Edit.CharRight) Ctrl+Q + Ctrl+S Move to the LEFT END of the current line (Edit.LineStart) Ctrl+Q + Ctrl+D Move to the RIGHT END of the current line (Edit.LineEnd) Ctrl+E Move a line UP (Edit.LineUp) Ctrl+X Move a line DOWN (Edit.LineDown) Ctrl+K + Ctrl+K Toggle (add or remove) bookmark (Edit.ToggleBookmark) Ctrl+K + Ctrl+N Move to the NEXT bookmark (Edit.NextBookmark) Ctrl+K + Ctrl+P Move to the PREVIOUS bookmark (Edit.PreviousBookmark) Ctrl+Q + Ctrl+W Save all modified Windows (File.SaveAll) Ctrl+L Find the NEXT instance of the search string (Edit.FindNext) Ctrl+K + Ctrl+L Find the PREVIOUS instance of the search string (Edit.FindPrevious) Ctrl+Q + Ctrl+L Drop down the list of open files (Window.ShowEzMDIFileList) The last sequence is like clicking the downward-facing triangle in the upper-right corner of the code editor window. VS will display a list of all the open windows. You can select from the list by typing the file name; the matching file will be selected as you type. Pause for a second and resume typing, and the matching process starts over, so you can select a different file. Nice, VS Team. The key takes you to the tab for the selected file.

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  • Perl ||= operator for PHP and Javascript

    - by zaf
    Just been re-introduced to the Perl '||=' operator from the classic Orcish Maneuver example: keys my %or_cache = @in; @out = sort { ($or_cache{$a} ||= KEY($a)) cmp ($or_cache{$b} ||= KEY($b)) } @in; Is this operator available in PHP and Javascript? And if not, do these two languages allow user defined operators?

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  • Maximum depth of a B-tree

    - by Phenom
    How do you figure out the maximum depth of a B-tree? Say you had a B-tree of order 1625, meaning each node has 1625 pointers and 1624 elements. What is the maximum depth of the tree if it contains 85,000,000 keys?

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  • Whats the maximum key length in NSDictionary?

    - by x3ro
    Hey there, I'm currently working on an app which displays a bunch of files in a table, and you can add and remove them and whatsoever. To prevent duplicates in the table, I'd like to create a NSDictionary using the files full path as keys for another NSDictionary which contains all the file information, but I am a little concerned about the maximum key length of NSDictionary, and also whether this solution would be performance killer or not... Looking forward to your answers. Best regards, x3ro

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  • PHP Arrays: A good way to check if an array is associative or sequential?

    - by Wilco
    PHP treats all arrays as associative, so there aren't any built in functions. Can anyone recommend a fairly efficient way to check if an array contains only numeric keys? Basically, I want to be able to differentiate between this: $sequentialArray = array('apple', 'orange', 'tomato', 'carrot'); and this: $assocArray = array('fruit1' => 'apple', 'fruit2' => 'orange', 'veg1' => 'tomato', 'veg2' => 'carrot');

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  • How to make per- http Request cache in ASP.NET 3.5

    - by Artem
    We using ASP.NET 3.5 (Controls-based apporach) and need to have storage specific for one http request only. Thread-specific cache with keys from session id won't work because threads are supposed to be pooled and therefore I have a chance to have data from some previous request in cache, which is undesireble in my case. I always need to have brand new storage for each request available through whole request. Any ideas how to do it in ASP.NET 3.5?

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  • aspxcombobox populating on the fly

    - by gaponte69
    Aspxcombobox populating on the fly works fine with IE, but with others browsers, when using arrow keys for navigation, the second depended control, always has value for the first next and not for the current, so I have a bit of delay ...

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  • How to modify web page elements loaded in a browser

    - by Trilok
    I want to associate some actions with keys (of a keyboard) and then modify the contents of a webpage loaded in the browser. For example, I'll write a firefox plugin and that would be listening to some keyboard events. Based on a key press (or something like that) I want to modify the html code of the page. For example, I would like to change the color of a link. Any suggestions on how can I go about doing this?

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  • How to listen to keyboard events in GWT table?

    - by Olaf Mertens
    In my GWT program I have a table that has a selected row. I'd like to move the row selection with the up- and down-keys on the keyboard. So I have to catch the key events somehow. The GWT docs handle key events in input fields only. But I don't have an input field! Is this possible at all? Maybe it is a DOM/Javascript restriction that GWT cannot work around...

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  • Retrive JSON data from JSON Object in C#

    - by user1638260
    JsonObject friendlist = facebookClient.Get("/me/friends") as JsonObject; //Retrive Data from friendlist { "data": [ { "name": "Mehta", "id": "1000032633029611" }, { "name": "Patu Mehta", "id": "1000042433527270" } ], "paging": { "next": "https://graph.facebook.com/100004241944047/friends?access_token=AAAEXJfmh18QBALKtilFYJz5PU6XvxKIaZAc65NYtyZCLbOqFKyZC8hdyjaU7C7w1CaLKG8tFdRtLYqtAX3vqrPwYNNe5G0aTGhB5x1mwgZDZD&limit=5000&offset=5000&__after_id=100004244527270" } } Count: 2 IsReadOnly: false Keys: Count = 2 Values: Count = 2 But i required only data not whole value like

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  • How to use this json string with jquery autocomplete?

    - by Pandiya Chendur
    I have two textboxes in my page, <asp:TextBox ID="TxtClientName" runat="server"></asp:TextBox> <asp:TextBox ID="TxtClientMob" runat="server"></asp:TextBox> and i have a json string, {"Table" : [{"ClientName" : "Pandiya","ClientMobNo" : "9566643707"}, {"ClientName" : "Bala","ClientMobNo" : "9994403569"}]} Is it possible to use this json string to autocomplete in two textboxes seperating keys ClientName and ClientMobNo in jquery..... Any suggestion....

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  • UNIQUE Constraints in SQL (MS-SQL)

    - by rockbala
    Why are UNIQUE Constraints needed in database ? Can you provide any examples ? Primary Key is UNIQUE by default... Understandable as they are referred in other tables as Foreign keys... relation is needed to connect them for rdbms platform... but why would one refer to other columns as UNIQUE, what is benefit of doing so ?)

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  • Subsonic 2.2 and SQL CE

    - by Giuseppe
    Hi, anybody use Subsonic with SQL Server CE 3.5 ? I try but get an error with Substage 2.2, error talking about PK_TABLE. My tables have primary keys and relations. Can someone help me ? By, Giuseppe.

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  • Web browser control: Detecting changes in form content

    - by Khou
    A form contains many elements, such as labels, Textbox, radio options box etc How do you detect the user has changed a textbox input value, or has choosen a radio option within the content of a web browser control? (not the winform itself). Do you handle a winform event for when the mouse clicked or keyboard keys pressed? or is there a better way to detect changes in the web browser content?

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  • Is there any way to sync the scrollbars in a JavaFX 1.2 ListView?

    - by Xystus7777
    I have multiple listviews sidebyside. I have a way to make sure the "selectedIndex" is the same on all of them, but is there a way to make it so the scrollbar's are ALWAYS synchronized? It seems that the scrollbars WILL be synced as long as the user uses the ARROW KEYS when navigating down the listview, however, if the user HOLDS DOWN the key, OR USES THE MOUSE WHEEL, they will not be synchronized at all. Thanks in advance! Andrew Davis NASA - Kennedy Space Center

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  • string directly before with regular expressions?

    - by acidzombie24
    I have been given a file that has its string like this blah blah DUMMY blah blah DUMMY blah blah VALUE blahX blahY KEY Some values/keys are optional, i cannot depend on order. With regular expressions using C# how do i write an regex that takes the value directly behind the key? I know i could write it in such a way it will match the first DUMMY but i cant think of how to make the VALUE instead.

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  • sql server: import operation won't copy full schema

    - by P a u l
    I recall that the import tool in sql server 2000 would copy indexes, relationships, etc. In sql server 2005/2008 the import tool in SSMS will only create the tables, copy the data, but the keys, indexes, relationships are missing. I can find no option in the import wizard to enable this? What am I missing here? Is this not possible anymore for any good reason?

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  • A scheme for expiring downloaded content?

    - by Chad Johnson
    I am going to offer a web API service that allows users to download and "rent" content for a monthly subscription fee. The API will either be open to everyone or possibly just select parties (not sure yet). Each developer must agree to a license, and they receive a developer key for their person. Each software application will have its own key as well. So then end-users will download the software which will interact with my service's API. Each user will have a key for each application as well (probably using OAuth). Content will be cached on first download and accessible offline via just the third-party application that cached the content. If a user cancels their subscription, I plan on doing the following: Deactivate the user's OAuth key for all applications. Do not allow the user's account to download new content via the API (and subsequently any software that uses the API). Now, the big question is: how do I make content expire if they cancel their subscription? If they cancel, they should not have access to content anymore. Here are ideas I've thought of (some of these are half-solutions, not yet fully fleshed out): Require that applications encrypt downloaded content using the user's OAuth key, making it available to only the application. This will prevent most users from going to the cache directory and just copying and keeping files. Update the user's key once a month, forcing content to re-cache on a monthly basic. Users could then access content for a month after they cancel their subscription. Require applications to "phone home" [to the service] periodically and check whether the user's subscription has terminated. If so, require in the API developer license that applications expire cache. If it is found that applications do not comply, their keys (and possibly keys for all developers) are permanently deactivated as a consequence. One major worry is that some applications may blatantly ignore constraints of the license. Is it generally acceptable to rely on applications abiding by the licensing constraints? Bad idea? Any other ideas? Maybe a way to make content auto-expire after x days? Something else? I'm open to out-of-the-box ideas.

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  • Send an onclick to a dropdown list

    - by P Nelson
    Is it possible to show the list of items in a dropdown list when the user presses the up or down arrow keys, when focus is on that dropdown control? I think this would involve sending an onclick to the dropdown list using onkeydown for Keycode 38(arrow up) & 40(arrow down)? But I cannot figure out how to do this.

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  • B-trees that use redistribution on insertion

    - by Phenom
    If I insert the following keys into a B-tree of order 4 (meaning 4 pointers and 3 elements in each node), I get the following B-tree. G / \ A IY Would it look any different if redistribution on insertion were used? How does redistribution on insertion work?

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  • Error message when running a Sinatra application on Windows Vista.

    - by Adam Siddhi
    I was following a video tutorial by Adam Keys about how to make a URL shortener app in Sinatra. The code that is giving me problems is located here http://pastie.org/958644 So when I ran it I got this error: shortener.rb:12: syntax error, unexpected $undefined, expecting $end @@ home I typed it exactly as Adam said but this keeps happening. What could the issue be? By the way, I am running ruby 1.9.1p243 (2009-07-16 revision 24175) [i386-mingw32] on Windows Vista. Thanks, Adam

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